Synonyms for "smooth"

14 kid-friendly synonyms for smooth, sorted by grade level (K-2, 3-5, 6-8).

What does "smooth" mean?

The word smooth is an adjective that means: having an even surface with no bumps.

Example: "The stone is smooth."

Grade K–2Easy synonyms for smooth

Younger kids can use these in place of "smooth":

Grade 3–5Stronger words for smooth

For elementary writers ready to add precision and variety to their vocabulary:

Grade 6–8Middle-school vocabulary for smooth

Tier 2 academic alternatives — useful for essays, persuasive writing, and standardized tests:

Opposites of smooth (antonyms)

Words that mean the opposite of smooth:

See the full smooth antonyms page →

FAQ — synonyms for smooth

What is a good synonym for smooth in a kid's writing?
For K-2 writers, try flat. For older students, "sleek" reads more naturally in school writing.
How many synonyms does smooth have?
We list 14 grade-appropriate synonyms for smooth across three reading levels. Adults' thesauruses include dozens more, but most aren't useful for K-8 vocabulary.
Is smooth a noun, verb, or adjective?
In this entry, smooth is used as an adjective.

🦒 Try the live tool

Look up another word in the Synonym Finder.

Open Synonym Finder for smooth →

Related tools for smooth